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1.the branch of electronics dealing with thermionic phenomena (especially thermionic vacuum tubes).
电子学中有关热离子现象（特别是热离子真空管）的分支。收藏指正
2.a thermionic tube having four electrodes.
有四个电极的热离子管。收藏指正
3.a thermionic tube having five electrodes.
有五个电极的热离子管。收藏指正
4.Application of FCS to Thermionic Heater
FCS在热媒炉控制中的应用收藏指正
5.a thermionic tube having three electrodes.
有三个电极的热离子管。收藏指正
6.impregnate with thorium oxide to increase thermionic emission.
注入镀氧化物使增加热电子发射。收藏指正
7.a thermionic tube having two electrodes; used as a rectifier.
有两个电极的热离子管；作用相当于调整器。收藏指正
8.HEORY OF THERMIONIC EMISSION (II)——ON THE MONOATOMIC LAYER AND DIPOLE THEORY
关于热电子发射理论的评述(Ⅱ)——单原子层和偶极子理论收藏指正
9.A high-resistance wire or ribbon forming the cathode in some thermionic tubes.
丝极在一些电子管中形成阴极的高电阻的金属丝或金属带收藏指正
10.an electric current produced between two electrodes as a result of electrons emitted by thermionic emission.
一种由于热离子散射产生的电子发射而在两个电极间产生的电流。收藏指正
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